CN108865384A - A kind of ER fluid and preparation method thereof of conductor dispersing type - Google Patents
A kind of ER fluid and preparation method thereof of conductor dispersing type Download PDFInfo
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- CN108865384A CN108865384A CN201810796573.8A CN201810796573A CN108865384A CN 108865384 A CN108865384 A CN 108865384A CN 201810796573 A CN201810796573 A CN 201810796573A CN 108865384 A CN108865384 A CN 108865384A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M171/00—Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well-defined but for which the chemical nature is either unspecified or only very vaguely indicated
- C10M171/001—Electrorheological fluids; smart fluids
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/04—Elements
- C10M2201/041—Carbon; Graphite; Carbon black
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/04—Elements
- C10M2201/05—Metals; Alloys
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/06—Metal compounds
- C10M2201/062—Oxides; Hydroxides; Carbonates or bicarbonates
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
- C10M2229/02—Unspecified siloxanes; Silicones
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
- C10M2229/04—Siloxanes with specific structure
- C10M2229/041—Siloxanes with specific structure containing aliphatic substituents
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/60—Electro rheological properties
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/14—Electric or magnetic purposes
- C10N2040/16—Dielectric; Insulating oil or insulators
Abstract
The present invention provides a kind of ER fluids of conductor dispersing type, including：Dielectric particle, conductive particles and insulating oil, wherein the dielectric particle and the conductive particles are dispersed in insulating oil.The present invention also provides a kind of ER fluid preparation methods of conductor dispersing type, include the following steps：Step S1：1~10 part of conductive particles is mixed with 50~200 parts of insulating oils, grinding or ultrasonic disperse 10~100 minutes, obtain conductive particles/insulation oil suspension；Step S2：50~500 parts of dielectric particles are added in the conductor/insulation oil suspension, it is polished to obtain the ER fluid containing micro-moisture；Step S3：By step 2 obtain described in the ER fluid containing micro-moisture be heat-treated 1 hour removing moisture at 120~200 DEG C and obtain ER fluid.Preparation method of the present invention is simple, is suitble to large-scale production, and nanoscale conductors particle is added in dielectric particle and insulating oil, so that ER fluid yield strength is high and the service life is long.
Description
Technical field
The invention belongs to intellectual material technical fields, and in particular to a kind of ER fluid containing nanometer conductor and its preparation
Method.
Background technique
ER fluid is a kind of intellectual material, is dispersed in insulating liquid and is formed by dielectric particle.In no external electric field
Under effect, ER fluid is in liquid condition, and when DC Electric Field is when ER fluid, the shear stress of ER fluid is with electric field
Increase and become larger.When electric field is sufficiently large, ER fluid is transformed into similar solid matter, and the transformation of this shear stress be can
It is inverse, continuously adjustable, the response time be millisecond magnitude, therefore ER fluid can be used for damping system, damper, stepless transmission,
Valve, Electromechanical Control coupling etc..
Currently, ER fluid can be divided into two classes：First is that conventional current becomes liquid, i.e. dielectric type ER fluid；Second is that huge electricity
Rheology liquid, i.e. polar-molecule type electro-rheological fluid.The former is too low from yield strength that is theoretical or experimentally obtaining, is unable to satisfy
It is practical.The yield strength of the latter is very high, and the key for generating high-yield strength in the electric field is the effect of polar molecule, and
Polar molecule can the mechanical friction, high temperature the effects of under desorption, decompose, volatilization etc., so polar-molecule type giant electro-rheological liquid
Service life is very poor, also can not be practical.
Summary of the invention
In order to overcome the above technical defects, the present invention provides a kind of ER fluid of conductor dispersing type and its preparation sides
Method, preparation method is simple, after nanoscale conductors particle is added, improves ER fluid yield strength.
To solve the above-mentioned problems, the present invention provides a kind of ER fluid of conductor dispersing type, ER fluid includes：Electricity
Media particle, conductive particles and insulating oil, the dielectric particle and the conductive particles are dispersed in insulating oil.
Further, the diameter of the dielectric particle is 0.1 micron~10 microns, and the diameter of the conductive particles is
0.2 nanometer~50 nanometers.
Further, the dielectric constant of the dielectric particle is greater than 10, and resistivity is greater than 10-3Europe rice.
Further, the dielectric particle includes TiO2、CaTiO3、BaTiO3、SrTiO3、LaTiO3One kind or more
Kind.
Further, the conductive particles are resistivity less than 10 when temperature is less than 20 DEG C-3The solid of Europe rice,
In, the conductive particles include metal, carbon, one or more in conductive organic matter.
Further, the metal be Ag, Al, Au, Cu, Fe, Hf, In, Nd, Ni, Pd, Pt, Rh, Ru, Sm, Sn, Ti, V,
Y, one or more in Zr.
Further, the carbon is one of amorphous carbon, graphite, graphene, redox graphene or a variety of.
Further, the conductive organic matter is polyacetylene, polythiophene, polypyrrole, polyaniline, polyhenylene, polyphenylene ethylene
One of alkene, poly bis alkynes are a variety of.
Further, the insulating oil be silicone oil, mineral oil, machine oil, hydrocarbon ils it is one or more.
Further, the dielectric particle shape is spherical shape, cuboid, tetrahedron, irregular polyhedrons or arbitrary shape
Shape.
To solve the above-mentioned problems, the present invention also provides a kind of ER fluid preparation methods of conductor dispersing type, including
Following steps：
Step S1：1~10 part of conductive particles is mixed with 50~200 parts of insulating oils, grinding or 10~100 points of ultrasonic disperse
Clock obtains conductor/insulation oil suspension；
Step S2：50~500 parts of dielectric particles are added in the conductor/insulation oil suspension, polished
To the ER fluid containing micro-moisture；
Step S3：By step 2 obtain described in the ER fluid containing micro-moisture be heat-treated 1 hour at 120~200 DEG C
It removes moisture and obtains ER fluid.
The ER fluid preparation method of above-mentioned conductor dispersing type, the dielectric particle includes TiO2、CaTiO3、BaTiO3、
SrTiO3、LaTiO3It is one or more；The conductive particles are resistivity less than 10 when temperature is less than 20 DEG C-3Europe rice
Solid, the conductive particles are metal, carbon, one or more in conductive organic matter；The insulating oil be silicone oil, mineral oil,
Machine oil, hydrocarbon ils it is one or more.
Compared with prior art, the beneficial effects of the invention are as follows：
1) nanoscale conductors particle is added in the present invention in dielectric particle and insulating oil, so that the surrender of ER fluid is strong
Degree is significantly raised.
2) dielectric particle of the invention and conductive particles are evenly distributed in insulating oil, each component to mechanical friction not
Sensitivity has good wearability, so long service life is long.
3) present invention influences less the polarization of each component in high temperature and low temperature, thus the system can high-low temperature resistant, temperature
It is applied widely.
4) preparation method of the present invention is simple, and each raw material has mature production technology, is suitble to large-scale production；It can answer extensively
Used in damper, shock absorber, microfluidic control, the fields such as electromechanical integration.
Detailed description of the invention
Specific embodiments of the present invention will be described in further detail with reference to the accompanying drawing, wherein：
Fig. 1 is the composition schematic diagram of ER fluid；
Fig. 2 is the yield strength and electric field strength relational graph of ER fluid in the embodiment of the present invention 1；
Fig. 3 is the yield strength and electric field strength relational graph of ER fluid in the embodiment of the present invention 2；
Fig. 4 is the yield strength and electric field strength relational graph of ER fluid in the embodiment of the present invention 3.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
The invention discloses a kind of ER fluids of conductor dispersing type, including：Dielectric particle, conductive particles and insulation
Oil, as shown in Figure 1, dielectric particle and conductive particles are dispersed in insulating oil.
Preferably, the diameter of dielectric particle is 0.1 micron~10 microns, and the diameter of conductive particles is 0.2 nanometer~50
Nanometer.
Preferably, the dielectric constant of dielectric particle is greater than 10, and resistivity is greater than 10 Europe rice.
Preferably, dielectric particle includes TiO2、CaTiO3、BaTiO3、SrTiO3、LaTiO3It is one or more.
Preferably, conductive particles are resistivity less than 10 when temperature is less than 20 DEG C-3The solid of Europe rice, wherein conductor
Particle includes metal, carbon, one or more in conductive organic matter.
Preferably, in metal Ag, Al, Au, Cu, Fe, Hf, In, Nd, Ni, Pd, Pt, Rh, Ru, Sm, Sn, Ti, V, Y, Zr
It is one or more.
Preferably, carbon is one of amorphous carbon, graphite, graphene, redox graphene or a variety of.
Preferably, conductive organic matter be polyacetylene, it is polythiophene, polypyrrole, polyaniline, polyhenylene, polyphenylene ethylene, poly bis
One of alkynes is a variety of.
Preferably, insulating oil be silicone oil, mineral oil, machine oil, hydrocarbon ils it is one or more.
Preferably, dielectric particle shape can have any shape.
The invention also discloses the ER fluid preparation methods, include the following steps：
Step S1：1~10 part of conductive particles is mixed with 50~200 parts of insulating oils, grinding or 10~100 points of ultrasonic disperse
Clock obtains conductor/insulation oil suspension；
Step S2：50~500 parts of dielectric particles are added in the conductor/insulation oil suspension, polished
To the ER fluid containing micro-moisture；
Step S3：By step 2 obtain described in the ER fluid containing micro-moisture be heat-treated 1 hour at 120~200 DEG C
It removes moisture and obtains ER fluid.
Preferably, dielectric particle includes TiO2、CaTiO3、BaTiO3、SrTiO3、LaTiO3It is one or more；Conductor
Particle is resistivity less than 10 when temperature is less than 20 DEG C-3The solid of Europe rice, conductive particles are metal, carbon, conductive organic matter
In it is one or more；Insulating oil be silicone oil, mineral oil, machine oil, hydrocarbon ils it is one or more.
ER fluid yield strength of the invention increases, and the service life is long, can high temperature resistant, preparation method is simple, is suitble to extensive
Production
Method and apparatus as used in the following examples is unless otherwise specified conventional method and equipment.
Raw material as used in the following examples, reagent etc., are commercially available unless otherwise specified.
Combined with specific embodiments below and attached drawing, technical solution of the present invention is described in further detail, but is worth noting
, following embodiment is only used for illustrating, and protection scope of the present invention is not limited to following embodiment.
Embodiment 1
A kind of preparation method of the ER fluid of conductor dispersing type is：
1g carbon particle and 200ml dimethicone are mixed, ultrasonic disperse 30min obtains carbon-silicone oil suspension；By 50g
Titanium dioxide granule is added in carbon-silicone oil suspension, carefully obtains moisture content ER fluid after grinding, finally by moisture content electricity
Rheology liquid is heat-treated 2 hours removing moisture at 150 DEG C, to obtain the ER fluid of conductor dispersibility.
Wherein, carbon particle density is 0.05g/cm3, partial size 20nm, dimethyl-silicon oil viscosity is 20cst, and density is
0.97g/cm3, titanium dioxide granule density is 4.2g/cm3, partial size is 1.5 μm.
The relationship of its yield strength and electric field strength is as shown in Fig. 2, top curve is the dispersibility of conductor obtained by the present embodiment
The relationship of ER fluid yield strength and electric field strength, the curve of lower section are that carbon particle ER fluid yield strength and electric field is not added
The relationship of intensity illustrates after carbon particle is added that yield strength has very big promotion.
Embodiment 2
A kind of preparation method of the ER fluid of conductor dispersing type is：
10g Argent grain and 200ml silicone oil are mixed first, grinding obtains silver-silicone oil suspension；By 50g titanium dioxide
Grain is added in carbon-silicone oil suspension, carefully ER fluid is obtained after grinding, finally by moisture content ER fluid at 200 DEG C
It is heat-treated 1 hour removing moisture.
Wherein, Argent grain partial size is 50nm, silicon oil viscosity 300cst, density 0.97g/cm3, titanium dioxide granule grain
Diameter is 1.5 μm.
The relationship of its yield strength and electric field strength is as shown in figure 3, top curve is the dispersibility of conductor obtained by the present embodiment
The relationship of ER fluid yield strength and electric field strength, the curve of lower section are that carbon particle ER fluid yield strength and electric field is not added
The relationship of intensity illustrates after Argent grain is added that yield strength has promotion.
Embodiment 3
A kind of preparation method of the ER fluid of conductor dispersing type is：
5g carbon particle and 150ml dimethicone are mixed, grinding obtains carbon-silicone oil suspension；By 100g titanium dioxide
Particle is added in carbon-silicone oil suspension, carefully ER fluid is obtained after grinding, finally by moisture content ER fluid at 170 DEG C
1 hour removing moisture of lower heat treatment.
Wherein, carbon particle density is 0.05g/cm3, partial size 20nm, dimethyl-silicon oil viscosity is 300cst, and density is
0.97g/cm3, titanium dioxide granule density is 4.2g/cm3, partial size is 1.5 μm,
The relationship of its yield strength and electric field strength is as shown in figure 4, top curve is the dispersibility of conductor obtained by the present embodiment
The relationship of ER fluid yield strength and electric field strength, the curve of lower section are that carbon particle ER fluid yield strength and electric field is not added
The relationship of intensity illustrates after carbon particle is added that yield strength has very big promotion.
Embodiment 4
A kind of preparation method of the ER fluid of conductor dispersing type is：
1 part of carbon particle and 50ml dimethicone are mixed, carbon-silicone oil suspension is obtained；By 100g titanium dioxide granule
It is added in carbon-silicone oil suspension, carefully obtains ER fluid after grinding, it is finally that moisture content ER fluid is warm at 150 DEG C
Handle 1 hour removing moisture.
Wherein, carbon particle density is 0.05g/cm3, partial size 20nm, dimethyl-silicon oil viscosity is 300cst, and density is
0.97g/cm3, titanium dioxide granule density is 4.2g/cm3, partial size is 1.5 μm.
Embodiment 5
A kind of preparation method of the ER fluid of conductor dispersing type is：
1g gold particle and 150g dimethicone are mixed, carbon-silicone oil suspension is obtained；100g titanium dioxide granule is added
Enter into carbon-silicone oil suspension, carefully ER fluid is obtained after grinding, finally by moisture content ER fluid at 150 DEG C at heat
Manage 2 hours removing moisture.
Wherein, gold particle partial size is 20nm, and dimethyl-silicon oil viscosity is 20cst, density 0.97g/cm3, titanium dioxide
Grain density is 3.8g/cm3, partial size is 1.2 μm.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, therefore
Without departing from the technical solutions of the present invention, according to the technical essence of the invention it is to the above embodiments it is any modification,
Equivalent variations and modification, all of which are still within the scope of the technical scheme of the invention.
Claims (10)
1. a kind of ER fluid of conductor dispersing type, which is characterized in that including：Dielectric particle, conductive particles and insulating oil,
Wherein, the dielectric particle and the conductive particles are dispersed in insulating oil.
2. ER fluid according to claim 1, it is characterised in that：The diameter of the dielectric particle be 0.1 micron~
10 microns, the diameter of the conductive particles is 0.2 nanometer~50 nanometers.
3. ER fluid according to claim 2, it is characterised in that：The dielectric constant of the dielectric particle is greater than 10,
Resistivity is greater than 10 Europe rice.
4. ER fluid according to claim 3, it is characterised in that：The dielectric particle is selected from TiO2、CaTiO3、
BaTiO3、SrTiO3、LaTiO3It is one or more.
5. ER fluid according to claim 1, it is characterised in that：The conductive particles are when temperature is less than 20 DEG C
Resistivity is less than 10-3The solid of Europe rice, wherein the conductive particles are metal, carbon, one or more in conductive organic matter.
6. ER fluid according to claim 5, it is characterised in that：The metal be Ag, Al, Au, Cu, Fe, Hf, In,
It is one or more in Nd, Ni, Pd, Pt, Rh, Ru, Sm, Sn, Ti, V, Y, Zr；
The carbon is one of amorphous carbon, graphite, graphene, redox graphene or a variety of；
The conductive organic matter is polyacetylene, in polythiophene, polypyrrole, polyaniline, polyhenylene, polyphenylene ethylene, poly bis alkynes
It is one or more.
7. ER fluid according to claim 1, it is characterised in that：The insulating oil is silicone oil, mineral oil, machine oil, hydrocarbon
Oily is one or more.
8. ER fluid according to any one of claims 1 to 4, it is characterised in that：The dielectric particle shape be it is spherical,
Cuboid, tetrahedron, irregular polyhedrons or arbitrary shape.
9. a kind of preparation method of the ER fluid of conductor dispersing type, which is characterized in that include the following steps：
Step S1：1~10 part of conductive particles is mixed with 50~200 parts of insulating oils, grinding or ultrasonic disperse 10~100 minutes,
Obtain conductive particles/insulation oil suspension；
Step S2：50~500 parts of dielectric particles are added in the conductive particles/insulation oil suspension, polished
To the ER fluid containing micro-moisture；
Step S3：By step 2 obtain described in the ER fluid containing micro-moisture be heat-treated at 120~200 DEG C 1 hour remove
Moisture obtains ER fluid.
10. the preparation method of the ER fluid of conductor dispersing type according to claim 9, it is characterised in that：The electricity is situated between
Matter particle includes TiO2、CaTiO3、BaTiO3、SrTiO3、LaTiO3It is one or more；The conductive particles are in temperature less than 20
DEG C when, be resistivity less than 10-3The solid of Europe rice, the conductive particles are metal, carbon, a kind of or more in conductive organic matter
Kind；The insulating oil be silicone oil, mineral oil, machine oil, hydrocarbon ils it is one or more.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810796573.8A CN108865384B (en) | 2018-07-19 | 2018-07-19 | Conductor dispersed electrorheological fluid and preparation method thereof |
| JP2020571617A JP7061406B2 (en) | 2018-07-19 | 2019-07-02 | Electrorheological fluid |
| PCT/CN2019/094359 WO2020015522A1 (en) | 2018-07-19 | 2019-07-02 | Electrorheological fluid |
| EP19837921.6A EP3810737B1 (en) | 2018-07-19 | 2019-07-02 | Electrorheological fluid |
| US16/515,029 US11162052B2 (en) | 2018-07-19 | 2019-07-18 | Electrorheological fluid |
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| CN201810796573.8A CN108865384B (en) | 2018-07-19 | 2018-07-19 | Conductor dispersed electrorheological fluid and preparation method thereof |
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| CN108865384B CN108865384B (en) | 2021-10-26 |
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| WO2020015522A1 (en) * | 2018-07-19 | 2020-01-23 | Sun Yat-Sen University | Electrorheological fluid |
| CN111040857A (en) * | 2019-12-27 | 2020-04-21 | 中山大学 | Electrorheological fluid and preparation method thereof |
| CN113214648A (en) * | 2021-04-12 | 2021-08-06 | 上海大学 | High-performance giant electrorheological elastomer and preparation and test methods thereof |
| CN114317076A (en) * | 2021-12-14 | 2022-04-12 | 菏泽学院 | Same-core different-shell nano-particle electrorheological fluid and preparation method thereof |
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| CN114317076A (en) * | 2021-12-14 | 2022-04-12 | 菏泽学院 | Same-core different-shell nano-particle electrorheological fluid and preparation method thereof |
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| CN108865384B (en) | 2021-10-26 |
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